Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-02-05
Phys.Rev.D77:084019,2008
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, 6 figures
Scientific paper
10.1103/PhysRevD.77.084019
The squashed Kaluza-Klien (KK) black holes differ from the Schwarzschild black holes with asymptotic flatness or the black strings even at energies for which the KK modes are not excited yet, so that squashed KK black holes open a window in higher dimensions. Another important feature is that the squashed KK black holes are apparently stable and, thereby, let us avoid the Gregory-Laflamme instability. In the present paper, the evolution of scalar and gravitational perturbations in time and frequency domains is considered for these squashed KK black holes. The scalar field perturbations are analyzed for general rotating squashed KK black holes. Gravitational perturbations for the so called zero mode are shown to be decayed for non-rotating black holes, in concordance with the stability of the squashed KK black holes. The correlation of quasinormal frequencies with the size of extra dimension is discussed.
Ishihara Hideki
Kimura Masashi
Konoplya Roman A.
Murata Keiju
Soda Jiro
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